Original 1st printing 17 x 22" concert poster for Traffic (featuring Steve Winwood) with Hammer at the Boston Tea Party (15 Lansdowne St location) in Boston, MA on 11/10-11/1970. Art by Eric Engstrom, medium flat index stock poster is in excellent (B+) condition; a 2&1/2 x 1/4" piece of masking tape in the top center margin, a small diagonal crease in the lower right corner and a couple of tiny specks of surface dirt in the lower left corner, otherwise fine. Great-looking late-period BTP poster with a fantastic design.